Tooth for excavators or the like.



Y M. J. WOZNAGK. TOOTH FOR EXOAVATOBS 0R TEE LIKE.

APPLIOATION FILED JULY 24,1911.

1,01 `1,547'. Patented De...- 12,1911.

caLuMllA PLANUGRAPH C0.. llAsHlNtrmN. D. t.

MICHEL J. WOZNACK, OF SEATTLE, WASHINGTON.

TOOTH FOR EXCAVATORS OR LIKE.

Specification of`Letters Patent. Patented Dec, 12, 1911.

Application 4filedrJ'uly 24, 1911. Serial No. 640,341.`

T o all whom @It may concern:

B e it known that I, MICHEL J. WozNAoK, a citizen of the United States of America, and a resident of the city of Seattle, in the county of King and State of l/Vashington, have invented certain new and useful Improvements in Teeth for Excavators or the ifike, of which the following is a specicaion.

.My invention relates to teeth for steam excavators, dredgers and like machines, and has for a primary object to provide a construction wherein the removable point can be firmly held and spreading of the side walls of its seat prevented.

Other objects will be set forth as my description progresses and those features of construction, arrangements and combinations of parts on which I desire protection, succinctly defined in my annexed claims.

Referring to the accompanying drawing wherein like numerals of reference indicate like parts throughout Figure 1 is a top plan of a tooth constructed in accordance with my invention. Fig. 2 is a side elevation thereof. Fig. 3 is an elevation of the point removed, and Fig. 4 is a vertical cross sectional view taken on line 4 4 of Fig. 2.

Reference numeral 1 indicates the body of the tooth whose upper face is inclined up-` wardly in a rearward direction and formed with a seat 1 for reception of the shank 3 of point 4. At its rear portion, body 1 is provided with the usual arms 2 and 2', spaced to receive the front edge portion of the shovel or scoop therebetween.

The bottom wall of seat 1 is inclined downwardly in a forward direction, byl

which construction the greatest depth of the seat occurs at its mouth, this being desirable inasmuch as shank 3, which corresponds thereto with respect to this tapering feature,

must be particularly strong at its forward end portion on which point 4 is provided, as

will be apparent.

Reference numeral 5 indicates longitudi-v Should point 4 strike heavily upon the ground lduring lowering of the shovel, the upper inclined walls or faces of extensions 5 will act in conjunction with the abutting upper faces of grooves 6 to exert an inward pressure on the side walls of seat 1, and thereby hold the same against spreading.

Reference numeral 7 indicates securing bolts which are passed through suitable apertures provided in shank 3 and body 1,

as shown. Point 4 projects below and to the sides of shank 3, thereby providing shoulders, as 8, 8', which normally abut the adj acent end of body 1 about the seat 1 thereof.

Having thus described my invention, what I claim as new, and desire to secure by Letters Patent of the United States of America, 1s

1. A toot-h of the character described com-V the seat of said body.

2. A tooth of the character described comprising a body formed in one face with a longitudinal seat, the side walls of said bodyseat being formed with grooves extending outwardly at an acute angle thereto and tapered in the direction of their length, a

point having a shank engaged in the seat of said body, and side extensions on the shank of said point fitting in the grooves of the seat of said body.

3. A tooth of the character described comprising a body formed in one face with a longitudinal seat, the side walls of the seat of said body being formed with grooves extending outwardly at an acute angle thereto, and tapered both laterally and longitudinally, a point having a shank engaged in the seat of said body, and side extensionson the shank of said point fitting in the grooves of the seat of said body vand conforming depth rearwardly, the side walls of the seat of said body being formed with grooves whose upper. side walls are inclined outwardly in an upward direction, a point having a rearwardly extending tapered shank Signed at Seattle, vWashington this 14 engaged in the seat of said body, and side day of July, 1911. extensions on the shank of said tooth engaged in the side grooves of said body-seat MICHEL J' WOZNACK' and having inclined upper side faces for in- Witnesses:

terloclcing engagement With the adjacent ARLITA ADAMS,

seat Walls. A. G. BOOTH.

Copies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents,

Washington, D. C. 

